JQuery :: Hovering A Menu Execution?

What I've already build can be found on demo. The Idea:I wanted to build a menu that when you hover the menu button the menubuttons slides up, when it is ready all the menubuttons will slide down. The next may slidedown when the first one is ready, etc.When you leave you mouse outside the picture, all the menuitems must slide up (like to have them slideup like it works when they slidedown) and the menubutton must slide down.The idea works, so that's not the problem, maybe the code could be better, but I thinks that's for later.The problem:When a user hovers very fast between menubutton and outside the picture the menubutton is slidedup, down etc. When you do this even faster the menuitems are stuck and shown, and that is not what I want.